/Engine/Source/Runtime/Engine/Classes/Animation/MirrorDataTable.h
Populates two arrays with a mapping of compact pose mirror bones and reference rotations
void FillCompactPoseAndComponentRefRotations ( const [FBoneContainer](API\Runtime\Engine\FBoneContainer) & BoneContainer, TCustomBoneIndexArray< [FCompactPoseBoneIndex](API\Runtime\AnimationCore\FCompactPoseBoneIndex), [FCompactPoseBoneIndex](API\Runtime\AnimationCore\FCompactPoseBoneIndex) > & OutCompactPoseMirrorBones, TCustomBoneIndexArray< FQuat, [FCompactPoseBoneIndex](API\Runtime\AnimationCore\FCompactPoseBoneIndex) > & OutComponentSpaceRefRotations ) const